Conduit box



.i Patentedy Feb.Y 1930 UNITED STATles",PA15.31751'1* i OFFICE i i RUSSELL PgLUNMI'REjoP ERIE, PENNSYLVANIA, Ass'rGNoR To ERIE'MALLEABLP.

IRON COMPANY, or ERIE; PENNSYLVANIA, A CORPORATION oF PENNSYLVANIA coNDUrT BOX 'e Appliation mea neeembell19,- 1925- serial No. 76,487.

This invention is designed toy improve conf the body at the end of the sleeve, said nut. duit fittings, particularlyv conduit fittings seating on the shoulder and through its adapted for use in connection with thread-y thrustforcing the sleeve into the opening.

"' .less conduits. v Features and ldetails' of the and claim. Y Y

The invention is `illustrated inthe accomp anying drawings as follows Fig. 1 showsatop View, partly in section.-

Fig. 2 a section on the line 2 2 in Fig. 1.

Fig. 3 a section on the line 3 3 inkv Fig. 2. 1 marks the body of. the box, 2 aconduit receiving projection having a tapered open- 1 ing therein, ,and 4: a tapered contractible sleeve operating in thetapered opening, this tapered sleeve having a slit 5. rvThe inner end of the sleeve 'has screw threads 6 and a nutV The Y 7 is screwed onv these screw threads. nut, as shown, has radiall openings 8 for af# ording a wrench-hold for the nut.

Shoulders 9 are formed on the walls of the body, the opening within the shoulders being sui'icient for the insertion of the sleeve 4.

They nut is dropped intothe space between the shoulder 9 andthe vend ofthe boX andthe sleeveis screwed into the nut into place. A

Y conduit A is then placed in the sleeve, screwing the .nut seating the same against the shoulder V9the sleeve is forced into the openvV ing 3 andinto clamping engagement with the V ybody havinga conduit'opening anda shoull rder in the'box spaced'from the inner end of Y In testimony whereof I- have hereunto setV 1 V5 'invention willappear from the specification. my hand;

- RUSSELL P. DUNMIRE.

xtheopening; aslotted contractible sleeve in itheopening Said sleeve'and the walls of the v I i opening havingY Wedging engaging surfaces frc'ontlractingthe.sleeve upona relative endi wise movement of the'k sleeve'and body, the inner end 'of the sleeve being the larger; and

fa--nut 4on the inner end of the sleeve'in the wts'pace between Vthe shoulderk and the wall ofy i 

